Poll: Trump beats Warren, Biden in Iowa match-ups

President TrumpDonald TrumpJudge rules Alaska governor unlawfully fired lawyer who criticized Trump Giuliani led fake electors plot: CNN Giuliani associate sentenced to a year in prison in campaign finance case MORE holds a slim lead in Iowa over former Vice President Joe BidenJoe BidenNew York woman arrested after allegedly spitting on Jewish children Former Sen. Donnelly confirmed as Vatican ambassador Giuliani associate sentenced to a year in prison in campaign finance case MORE and Sen. Elizabeth WarrenElizabeth WarrenDemocrats call on Biden administration to ease entry to US for at-risk Afghans Biden stiff arms progressives on the Postal Service Trump by the numbers: 2024 isn't simple MORE (D-Mass.) in hypothetical match-ups, according to a new poll.

The survey by Emerson College found that 51 percent of registered voters said they would choose Trump over Biden. Respondents favored Trump by the same 51 percent-49 percent margin in a match-up against Warren.

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The reverse was the case for Sen. Bernie SandersBernie SandersFilibuster becomes new litmus test for Democrats Gallego says he's been approached about challenging Sinema Democrats call on Biden administration to ease entry to US for at-risk Afghans MORE (I-Vt.). Fifty-one percent of voters said they would pick him over Trump, who garnered 49 percent support.

The results of all three match-ups fell within the poll's 3.2 percentage-point margin of error.

The survey also found Warren and Biden leading the Democratic field, tied at 23 percent support among Democratic caucusgoers. South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegThe Hill's Morning Report - Presented by Facebook - Biden talks, Senate balks Airlines suspend US flights in response to 5G deployment AT&T, Verizon to delay 5G rollout near certain airports MORE was in third place with 16 percent, followed by 13 percent for Sanders.

Researchers surveyed 888 registered voters, including 317 Democratic caucusgoers, from Oct. 13-16. The Democratic caucusgoer responses have a margin of error of plus or minus 5.5. percentage points.

The Iowa caucus is scheduled for Feb. 3.